Patents by Inventor Wilfried Bartz

Wilfried Bartz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8048504
    Abstract: A layered composite which includes the following layers (I) and (II), wherein layer (I) includes (a) from 0 to 80 part by weight of at least one particular polyamide; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer; and (c) from 0 to 80 parts by weight of at least one particular polyamide which is different from (a), wherein various monomer units are present in at least 20 parts by weight of the entirety of (a) and (b) and various other monomer units are present in at least 20 parts by weight of the entirety of (b) and (c); and layer (II) includes at least one ethylene-vinyl alcohol copolymer.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: November 1, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Guido Schmitz, Harald Haeger, Hans Ries, Wilfried Bartz
  • Patent number: 7582342
    Abstract: A composition suitable for molding is provided having the following components: I. from 97 to 80 parts by weight of a polyetheramide, having units based on one or more linear aliphatic diamines having from 6 to 14 carbon atoms, one or more linear aliphatic or aromatic dicarboxylic acids having from 6 to 14 carbon atoms, and one or more polyetherdiamines having at least 3 carbon atoms per ether oxygen and having primary amino groups at the chain ends, II. from 3 to 20 parts by weight of a rubber containing one or more functional groups; and where the total of the parts by weight of I and II is 100; and moldings produced therefrom.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: September 1, 2009
    Assignee: Degussa AG
    Inventors: Franz-Erich Baumann, Wilfried Bartz, Martin Himmelmann, Olivier Farges
  • Patent number: 7175896
    Abstract: A layered composite contains the following layers: (I) a layer I composition containing (a) from 0 to 80 parts by weight of at least one polyamide; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer; and (c) from 0 to 80 parts by weight of at least one polyamide; and (II) a layer II composition containing at least one ethylene-vinyl alcohol copolymer.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: February 13, 2007
    Assignee: Degussa AG
    Inventors: Guido Schmitz, Harald Haeger, Hans Ries, Wilfried Bartz
  • Publication number: 20060141188
    Abstract: The present invention provides a layered composite, which includes the following layers: (I) a layer I composition including: (a) from 0 to 80 part by weight of at least one polyamide selected from the group including PA6, PA66, PA6/66 and mixtures thereof; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer that includes the following monomer units: (?) from 0.
    Type: Application
    Filed: February 22, 2006
    Publication date: June 29, 2006
    Applicant: DEGUSA AG
    Inventors: Guido Schmitz, Harald Hager, Hans Ries, Wilfried Bartz
  • Patent number: 6884485
    Abstract: A molding composition containing the following components: I. from 99.9 to 95 parts by weight of a polyetheramide obtained from 1) a linear aliphatic diamine having from 6 to 12 carbon atoms, 2) a linear aliphatic or aromatic dicarboxylic acid having from 6 to 12 carbon atoms, and 3) a polyetherdiamine having at least 3 carbon atoms per ethereal oxygen atom and having a primary amino group at an end of the chain, and II. from 0.1 to 5 parts by weight of a copolymer which contains from 0.8 to 20% by weight of an anhydride or an epoxide in copolymerized form, wherein the total amount of I. and II. is 100 parts by weight, is suitable for the extrusion of flexible pipes, and also for the production of flexible blow-molded articles.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: April 26, 2005
    Assignee: Degussa AG
    Inventors: Franz-Erich Baumann, Martin Himmelmann, Wilfried Bartz, Olivier Farges
  • Publication number: 20050038201
    Abstract: A process for condensing polyamides to increase their molecular weight, using a compound having at least two carbonate units comprises using a polyamide which, as a result of its preparation, comprises from 5 to 500 ppm of phosphorus in the form of an acidic compound, and adding, to the polyamide, from 0.001 to 10% by weight of a salt of a weak acid, thus eliminating the inhibiting action of the phosphorus compound.
    Type: Application
    Filed: August 16, 2004
    Publication date: February 17, 2005
    Applicant: DEGUSSA AG
    Inventors: Roland Wursche, Andreas Dowe, Franz-Erich Baumann, Wilfried Bartz, Martin Himmelmann, Rainer Goring
  • Publication number: 20050014842
    Abstract: A composition suitable for molding is provided having the following components: I. from 97 to 80 parts by weight of a polyetheramide, having units based on one or more linear aliphatic diamines having from 6 to 14 carbon atoms, one or more linear aliphatic or aromatic dicarboxylic acids having from 6 to 14 carbon atoms, and one or more polyetherdiamines having at least 3 carbon atoms per ether oxygen and having primary amino groups at the chain ends, II. from 3 to 20 parts by weight of a rubber containing one or more functional groups; and where the total of the parts by weight of I and II is 100; and moldings produced therefrom.
    Type: Application
    Filed: July 16, 2004
    Publication date: January 20, 2005
    Applicant: DEGUSSA AG
    Inventors: Franz-Erich Baumann, Wilfried Bartz, Martin Himmelmann, Olivier Farges
  • Publication number: 20040265527
    Abstract: The present invention provides a layered composite, which includes the following layers:
    Type: Application
    Filed: October 9, 2003
    Publication date: December 30, 2004
    Applicant: DEGUSA AG
    Inventors: Guido Schmitz, Harald Hager, Hans Ries, Wilfried Bartz
  • Patent number: 6677015
    Abstract: A molding composition of at least 50% by weight of a polyamine-polyamide copolymer obtained from 0.05 to 2.5% by weight of a polyamine having at least 4 nitrogen atoms and having a viscosity of at least 5 000 Pa•s at 250° C. and at a shear rate of 0.1 l/s, and having a viscosity ratio of at least 7 at 250° C., when the melt viscosities at shear rates of 0.1 l/s and 100 l/s are compared with one another, has high melt stiffness and is easy to cut, and performs well in blow molding.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: January 13, 2004
    Assignee: Degussa AG
    Inventors: Martin Himmelmann, Wilfried Bartz, Franz-Erich Baumann, Guido Schmitz, Georg Oenbrink, Harald Haeger, Ralf Richter
  • Publication number: 20030162899
    Abstract: A molding composition containing the following components:
    Type: Application
    Filed: January 21, 2003
    Publication date: August 28, 2003
    Applicant: Degussa AG
    Inventors: Franz-Erich Baumann, Martin Himmelmann, Wilfried Bartz, Olivier Farges
  • Patent number: 6579581
    Abstract: A molding which comprises the following components: (I) from 60 to 96.5 parts by weight of polyamide; (II) from 3 to 39.5 parts by weight of an impact-modifying component which contains anhydride groups, (III) from 0.5 to 20 parts by weight of a copolymer which contains units of the monomers: (a) &agr;-olefin, (b) acrylic compound, and also (c) olefinically unsaturated epoxide, carboxylic anhydride, carboximide, oxazoline or oxazinone, where the total of the parts by weight of components I, II, and III is 100, and where moreover the polyamide has an excess of amino end groups, has improved low-temperature impact strength, even if the molding composition also comprises a plasticizer.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: June 17, 2003
    Assignee: Degussa AG
    Inventors: Wilfried Bartz, Franz-Erich Baumann, Guido Schmitz, Georg Oenbrink, Harald Haeger
  • Publication number: 20020142118
    Abstract: The present invention provides a layered composite, which includes the following layers:
    Type: Application
    Filed: December 21, 2001
    Publication date: October 3, 2002
    Applicant: Degussa AG
    Inventors: Guido Schmitz, Harald Haeger, Hans Ries, Wilfried Bartz
  • Publication number: 20020119267
    Abstract: A molding composition of at least 50% by weight of a polyamine-polyamide copolymer obtained from 0.05 to 2.5% by weight of a polyamine having at least 4 nitrogen atoms and having a viscosity of at least 5 000 Pa•s at 250° C. and at a shear rate of 0.1 l/s, and having a viscosity ratio of at least 7 at 250° C., when the melt viscosities at shear rates of 0.1 l/s and 100 l/s are compared with one another, has high melt stiffness and is easy to cut, and performs well in blow molding.
    Type: Application
    Filed: December 19, 2001
    Publication date: August 29, 2002
    Applicant: DEGUSSA AG
    Inventors: Martin Himmelmann, Wilfried Bartz, Franz-Erich Baumann, Guido Schmitz, Georg Oenbrink, Harald Haeger, Ralf Richter
  • Publication number: 20020019477
    Abstract: A molding which comprises the following components:
    Type: Application
    Filed: June 22, 2001
    Publication date: February 14, 2002
    Applicant: Degussa-Huels Aktiengesellschaft
    Inventors: Wilfried Bartz, Franz-Erich Baumann, Guido Schmitz, Georg Oenbrink, Harald Haeger
  • Patent number: 5053440
    Abstract: Molding compounds, semi-finished products and finished articles comprising polymeric material which can be inscribed by means of laser light. The products contain an additive which is virtually colorless in the visible spectral range and produces a marking with high color contrast in the visible spectral range under the effect of laser light outside the visible range.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: October 1, 1991
    Assignee: Huels Aktiengesellschaft
    Inventors: Ralf Schueler, Christian Herkt-Maetzky, Wilfried Bartz
  • Patent number: 4985494
    Abstract: A thermoplastic molding composition comprising 70 to 98 parts of an aromatic polycarbonate having a viscosity number of from 40 to 100 cm.sup.3 /g and 2 to 30 parts of a polyoctenylene or a modified polyoctenylene.
    Type: Grant
    Filed: February 21, 1990
    Date of Patent: January 15, 1991
    Assignee: Huels Aktiengesellschaft
    Inventors: Ralf Schueler, Joachim Muegge, Michael Droescher, Wilfried Bartz, Roland Feinauer
  • Patent number: 4923926
    Abstract: A thermoplastic molding composition comprising 70 to 98 parts of an aromatic polycarbonate having a viscosity number of from 40 to 100 cm.sup.3 /g and 2 to 30 parts of a polyoctenylene or a modified polyoctenylene.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: May 8, 1990
    Assignee: Huels Aktiengesellschaft
    Inventors: Ralf Schueler, Joachim Muegge, Michael Droescher, Wilfried Bartz, Roland Feinauer
  • Patent number: 4920174
    Abstract: Impact-resistant polyester molding compounds, comprising an intimate mixture ofA. 60 to 98% by weight of a polyester andB. 2 to 40% by weight of a polyalkenamer, optionally containing functional groups,which is treated with from about 0.05 to 5% by weight, relative to the sum of components A and B, of an organic radical former at temperature sufficient to cause said radical former to decompose into free radicals are provided.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: April 24, 1990
    Assignee: Huels Aktiengesellschaft
    Inventor: Wilfried Bartz
  • Patent number: 4840993
    Abstract: Impact-resistant polyamide molding compound consisting of a mixture ofA. 60 to 98% by weight of a polyamide andB. 2 to 40% by weight of a polyalkenamer, wherein the mixture is treated at elevated temperatures with 0.05 to 5% by weight of the sum of components A and B of an organic radical former are provided as well as processes for making them.
    Type: Grant
    Filed: April 21, 1987
    Date of Patent: June 20, 1989
    Assignee: Huels Aktiengesellschaft
    Inventor: Wilfried Bartz
  • Patent number: 4755552
    Abstract: Impact-resistant polyamide molding compounds are provided consisting of a mixture of (A) from about 80 to about 99% by weight of a polyamide having an ETA.sub.rel value of from about 1.2 to about 2.4 and (B) from about 2 to about 20% by weight of a polyalkenamer having a viscosity number of from about 50 to about 400 ml/g.
    Type: Grant
    Filed: April 21, 1987
    Date of Patent: July 5, 1988
    Assignee: Huels Aktiengesellschaft
    Inventors: Hans Jadamus, Michael Droescher, Wilfried Bartz